Knife sharpening cutting board



FIG. 1 is a perspective view of a knife sharpening cutting board showing my new design;

FIG. 2 is an enlarged top plan view thereof;

FIG. 3 is an enlarged bottom plan view thereof;

FIG. 4 is an enlarged front side elevation view thereof;

FIG. 5 is an enlarged back side elevation view thereof;

FIG. 6 is an enlarged right side elevation view thereof; and,

FIG. 7 is an enlarged left side elevation view thereof. 

The ornamental design for a knife sharpening cutting board, as shown and described. 